Merge pull request #15 from fxdupont/rmdir

Rmdir
Merge branch 'transaction' of https://github.com/fxdupont/SoftHSMv2 into fxdupont-transaction

Conflicts:
	src/lib/object_store/OSToken.cpp
Merge pull request #17 from fxdupont/osslthread

add multi-thread stuff for OpenSSL
Merge pull request #18 from fxdupont/dump

add dump object file tool
Save the key material in a correct way.
The attribute checks made this more visible.
E.g. CKA_VALUE for DSA looked like it came from the user,
but is generated by us.